Should I tell my friends with benefits that I'm dating?

I started an friends with benefits relationship about three weeks ago. When we were just talking one time, he asked when was the last time I had dated someone. I told him that I had a few days ago. He started asking what we did and how far we went and who he was. I'm not dating that guy anymore, but I want to date other guys as I'm obviously not getting my emotional needs met by my friends with benefits. Should I tell my friends with benefits that I am? We never made any rules about exclusivity. How do I bring it up?

We started as friends. It just progressed into this weird inbetween relationship. He is not looking for anything more at this time. I'm happy to just keep it physical until I find a guy who will fulfill my emotional and physical needs.